I have a fair amount of old rough lawn that I let grow last year and scythed off in September. This year I've done almost nothing to it and have an interesting mix of eared grasses, sorrel, and some wild flowers. I quite like the effect, but what can I do to increase the variety next year and add more colour, without increasing the workload too much. Whenever the weather is good for gardening, I'd much rather be on the bike!